Structural Transitions in a Classical Two-Dimensional Molecule System

Details Structural Transitions in a Classical Two-Dimensional Molecule System Structural Transitions in a Classical Two-Dimensional Molecule System

2002-03-06

arxiv.org/abs/cond-mat/0203137v1

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 7 figures

Scientific paper

10.1016/S0038-1098(02)00157-6

The ground state of a classical two-dimensional (2D) system with finite number of charged particles, trapped by two positive impurities charges localized at a distance (zo) from the 2D plane and separated from each other by a distance xp are obtained. The impurities are allowed to carry more than one positive charge. This classical system can form a 2D-like classical molecule that exhibits structural transitions and spontaneous symmetry breaking as a function of the separation between the positive charges before it transforms into two independent 2D-like classical atoms. We also observe structural transitions as a function of the dielectric constant of the substrate which supports the charged particles, in addition to broken symmetry states and unbinding of particles.

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